The hub for foreign flights at O'Hare foreign Airport is the International Terminal (Terminal 5), where British Airways is based. The terminal houses the British Airways office, which provides services to travelers arriving or departing on BA flights. Customer assistance, check-in, and ticketing are among the services offered by the office. Terminal 5, which manages the majority of O'Hare's international British Airways Chicago Office flights, provides access to the British Airways office in Chicago. This is the main place for all in-person questions and services if you're flying with British Airways. Additionally, you can check online for any adjustments to operation hours or temporary site changes.